package Text2;
import java.util.HashSet;
/*
 *@Student 张策
 */
public class text1 {
    public static void main(String[] args) {
        HashSet set = new HashSet();
        for (int i = 1; i <= 100; i++) {
            set.add(new A(i));
        }
    }
}
class A{
    int a;
    public A(int a) {
        this.a = a;
    }

}
